<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE HTML>
<html>
<head>
    <style type="text/css">
        #dragTarget {width:488px;height:70px;padding:10px;border:1px solid #aaaaaa;}
    </style>
    <script type="text/javascript">
        function allowDrop(ev){//移动到指定区域
            ev.preventDefault();
        }
        function drag(ev){   //拖动
        	console.log(ev)
            ev.dataTransfer.setData("Text",ev.target.id);
        }
        function drop(ev){     //在指定区域松开鼠标
        	console.log(ev)
            ev.preventDefault();
            var data=ev.dataTransfer.getData("Text");
            ev.target.appendChild(document.getElementById(data));
        }
    </script>
</head>
<meta charset="UTF-8">
<title>Insert title here</title>
<body>
    <p>请把 W3School 的图片拖放到矩形中：</p>
    <div id="dragTarget" ondrop="drop(event)" ondragover="allowDrop(event)"></div>
    <br /> 
    <img id="dragImg" src="http://www.w3school.com.cn/i/w3school_banner.gif" draggable="true" ondragstart="drag(event)" />
</body>
</html>


